"We have to seal this entrance first, and then send someone in with diving equipment to go in. Otherwise, they won't be able to swim in at all; the current is too fast!"
"Okay, I'll measure the location of the opening now, then we'll make a protective barrier to block it, and then send people in!"
After discussing and agreeing on a plan, Lu Yuan ordered everyone to pull the three of them up.
The other team members continued their search, but Lu Yuan now had a general idea of what was going on.
So, when they reached the top of the cave entrance, Zhou Tong drew a diagram showing the measured size of the entrance, and then found some materials to process.
Several hours later, the plug was finished. It was rough in appearance, but very durable, and was designed to seal the hole.
Lu Yuan turned to look at Zhou Tong: "Let me handle this one. You guys can provide support from the side. I have a dimensional space, and I can find something suitable to escape danger anytime, anywhere!"
This time, Zhou Tong did not refuse. After all, the level of danger inside could now be determined, and there was no particularly great risk, so letting Lu Yuan go should not be a problem.
After all, Lu Yuan has a dimensional space, so if he encounters danger, he can immediately enter the space to avoid disaster.
And so, Lu Yuan was suspended alone on one rope, while the other rope held the huge plug.
When they reached the cave entrance, the water flow was even more rapid than before, like a tap with the valve turned to its maximum. The water rushed out for several meters before slowly receding. Looking at this huge flow of water, Lu Yuan's heart stirred.
"With such a large flow of water, this must be an underground river with extremely abundant water resources! And these sands should still be appearing continuously. If Xiwen is still alive in this place, as long as he can find the upstream location of the underground river, he should be able to survive!"
Thinking of this, Lu Yuan felt a surge of excitement.
He dragged the plug to the entrance of the hole, while several people nearby were responsible for securing the plug in place.
After a great deal of effort, the group finally managed to plug the hole, and Lu Yuan, with his back against the plug, was already inside.
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